Cotter-pin puller



Patented Dec. 11, 1923.

UNITED STATES JUDSON C. DE GRAFF, 0F HARRISVILLE, NEW YORK.

CUTTER-PIN FULLER.

Application filed. June 1, 1920.

To all whom it may concern:

Be it known that I, JUDsoN C. DE GRAFF, of the town of Harrisville, in the county of Lewis, in the State of New York, United States, have invented certain new and useful Improvements in Cotter-Pin Pullers, of which the following is the specification.

My invention relates to improvements in cotter pin pullers and the object of the invention is to devise a tool which will readily remove cotter pins from bolts and nuts that are awkwardly situated and wherein it is impossible to get a straight pull. A further object is to provide means on the puller for straightening the bent ends of the pin.

My invention consists of the parts constructed and arranged all as hereinafter more particularly described and illustrated in the accompanying drawing in which:

Fig. 1 is a side view of my cotter pin puller showing the same in the open position.

Fig. 2 is a side view thereof showing the same applied to a cotter pin and the cotter pin partially withdrawn from the nut.

Fig. 3 is an end view of the same, and

Fig. 4 is a detail of one of the handle portions showing the means for straightening bent cotter pins.

Like characters of reference indicate corresponding parts in the different views.

1 is the pusher jaw portion provided with the handle 2 and the bifurcated jaw 3 provided with suitable serrations 4 on the forward face thereof. The pusher jaw portion is constructed of channelled cross section. 5 is a hood portion at the forward end of the pusher jaw portion. 6 is the puller jaw portion provided with the depending curved j aw or tine like portion 7, such portion being designed to engage the eye of the cotter pin. 8 is a suitable handle on the puller jaw portion and 9 is a bevelled slot in the end thereof for straightening bent cotter pins.

Serial No. 385,812.

10 is a pin or rivet pivoting the pusherjaw portion 1 to the puller jaw portion 6, the pusher jaw portion straddling the puller jaw portion. 11 is a suitable spring interposed between the handle portions 2 and 8 for normally holding them in the open position. 12 is a nut, 13 is a bolt and 14: is a cotter pm.

My device is used as follows:

The depending tine like jaw? is applied to the eye of a cotter pin 14: and by pressing the handles 2 and 8 together such jaw 7 is moved from the position shown in Fig. l to the position shown in Fig. 2, the serrations 4 on the bifurcated jaw 8 en aging the nut meanwhile as is shown in l igQ 2. It is to be understood that the jaw 7 moves between the portions of the bifurcated jaw 3 as does the cotter pin 7.

TV hen cotter pins are bent as is often the case they can be straightened by applying the handle portion 8 of the bevelled slot 9 thereto. This is done by straddling the cotter pin in the vicinity of where it enters the nut and forcing the slotted handle outward along the pin.

The lower edge of the hood portion 5 acts as a stop for the jaw 7 and prevents the jaws opening too far apart.

Vhat I claim as my invention is:

In a cotter pin puller, the combination with the pusher jaw and handle formed of a single stamped up sheet of metal, said jaw having a hooded head with a depending bifurcated portion with serrations at the extremities of the forward faces thereof, a puller jaw and handle pivot-ally connected in the hooded head of the pusher jaw portion and having a depending tine-like jaw formed thereon, the lower transverse edge of the hooded head of the pusher jaw portion constituting a stop for limiting the opening of the puller jaw portion.

J UDSON C. DE GRAFF. 

